black eggs
Try the black eggs é»çå kuro-tamago at Owakudani. Boiled on site, their shells are a mottled black due to a chemical reaction with the sulphurous water, but the inside is quite tasty. According to Japanese legend, every one you eat will add seven years to your life. 5 eggs and hence 35 years will set you back just Â¥500.
mountain brownies
If you've been in Japan for a while and miss the taste of a warm brownie, try the mountain brownies at Sagamiya. The shop is a few steps away from the tourist information center, right in front of the bus stops. You can't miss the smell, as they are made on site!!